Browsing by Subject "puheääni"

Goals. This thesis explores what are the convincing prosodic features of Finnish speech, concen-trating on two main features, fundamental frequency and speech rate. Earlier studies into the pro-sodic features of speech have shown listeners perceive speakers with lower fundamental frequen-cy (f0) and higher speech rate to be more convincing. I am also trying to establish whether there can be found an interaction between speaker’s gender and credibility. However, at the point of publication and to the best of the author’s knowledge, there has not been any published research regarding what are the convincing parameters in Finnish speech prosody. In light of the above, the hypothesis of this research is: The prosodic features of a convincing speech in the Finnish language do not differ from the prosodic features to be convincing (proven by published re-search) in other western and European languages. The purpose of this study is to provide addi-tional information to the field of speech research in Finnish language. Methods. This was a quantitative study and involved the use of both listening experiments and statistical tests. The listening experiment was used to examine the prosodic features of convincing speech, with 16 statements being collected from European Parliament's plenary website, two statements each from four Finnish male MEPs and 4 Finnish female MEPs. Each statement was first delexicalized, and out of each delexicalized statement, eight new manipulations were creat-ed, for a total of 64 manipulated statements. These manipulations involved raising and lowering the fundamental frequency by ±4 semitones and both speeding up and speeding down the speech rate by ±1.5 seconds. This resulted in the eight manipulated statements for each lexicalized state-ment being classified as: high, low, fast, slow, high-fast, high-slow, low-fast and low-slow. During the listening experiment, each manipulated statement was compared to a non-modified statement. Twelve native Finnish-speaking subjects participated in the experiment; during which they lis-tened to sounds in pairs of two (manipulated vs. non-manipulated), after which the subjects an-swered the question “Which of the statements is more convincing: the first or second one?” Results and conclusions. In conclusion, it was observed that a lower fundamental frequency and higher speech rate were perceived as more convincing than a higher fundamental frequency and lower speech rate. This matches previous research findings on other European languages and due to the statistically significant results we saw between lower f0, faster speech rate and convincing speech, this allows us to prove this thesis’ hypothesis, that convincing prosodic features in the Finnish language are the same as those identified in English language.